chr14-75042443-G-T

Position:

chr14-75042443-G-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001040108.2(MLH3):c.3315C>A(p.Asp1105Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00332 in 1,614,088 control chromosomes in the GnomAD database, including 12 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D1105N) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0030 ( 2 hom., cov: 32)

Exomes 𝑓: 0.0033 ( 10 hom. )

Consequence

MLH3
NM_001040108.2 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:10

Conservation

PhyloP100: 0.714

Variant links:

Genes affected

MLH3 (HGNC:7128): (mutL homolog 3) This gene is a member of the MutL-homolog (MLH) family of DNA mismatch repair (MMR) genes. MLH genes are implicated in maintaining genomic integrity during DNA replication and after meiotic recombination. The protein encoded by this gene functions as a heterodimer with other family members. Somatic mutations in this gene frequently occur in tumors exhibiting microsatellite instability, and germline mutations have been linked to hereditary nonpolyposis colorectal cancer type 7 (HNPCC7). Several alternatively spliced transcript variants have been identified, but the full-length nature of only two transcript variants has been determined. [provided by RefSeq, Jul 2008]

MLH3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.005310178).

BP6

Variant 14-75042443-G-T is Benign according to our data. Variant chr14-75042443-G-T is described in ClinVar as [Likely_benign]. Clinvar id is 416452.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr14-75042443-G-T is described in Lovd as [Benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00302 (460/152260) while in subpopulation NFE AF= 0.00397 (270/68018). AF 95% confidence interval is 0.00358. There are 2 homozygotes in gnomad4. There are 243 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 460 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MLH3	NM_001040108.2 linkuse as main transcript	c.3315C>A	p.Asp1105Glu	missense_variant	3/13	ENST00000355774.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MLH3	ENST00000355774.7 linkuse as main transcript	c.3315C>A	p.Asp1105Glu	missense_variant	3/13	5	NM_001040108.2	P1	Q9UHC1-1

Frequencies

GnomAD3 genomes

AF:

0.00302

AC:

460

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000555

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000982

Gnomad ASJ

AF:

0.00202

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000415

Gnomad FIN

AF:

0.0131

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00397

Gnomad OTH

AF:

0.00191

GnomAD3 exomes

AF:

0.00315

AC:

793

AN:

251490

Hom.:

AF XY:

0.00312

AC XY:

424

AN XY:

135920

show subpopulations

Gnomad AFR exome

AF:

0.000554

Gnomad AMR exome

AF:

0.00121

Gnomad ASJ exome

AF:

0.00129

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00127

Gnomad FIN exome

AF:

0.0115

Gnomad NFE exome

AF:

0.00376

Gnomad OTH exome

AF:

0.00228

GnomAD4 exome

AF:

0.00335

AC:

4895

AN:

1461828

Hom.:

Cov.:

AF XY:

0.00336

AC XY:

2442

AN XY:

727226

show subpopulations

Gnomad4 AFR exome

AF:

0.000388

Gnomad4 AMR exome

AF:

0.00101

Gnomad4 ASJ exome

AF:

0.000995

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00124

Gnomad4 FIN exome

AF:

0.0110

Gnomad4 NFE exome

AF:

0.00354

Gnomad4 OTH exome

AF:

0.00270

GnomAD4 genome

AF:

0.00302

AC:

460

AN:

152260

Hom.:

Cov.:

AF XY:

0.00326

AC XY:

243

AN XY:

74436

show subpopulations

Gnomad4 AFR

AF:

0.000554

Gnomad4 AMR

AF:

0.000980

Gnomad4 ASJ

AF:

0.00202

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000415

Gnomad4 FIN

AF:

0.0131

Gnomad4 NFE

AF:

0.00397

Gnomad4 OTH

AF:

0.00189

Alfa

AF:

0.00341

Hom.:

Bravo

AF:

0.00210

TwinsUK

AF:

0.00485

AC:

ALSPAC

AF:

0.00337

AC:

ESP6500AA

AF:

0.00113

AC:

ESP6500EA

AF:

0.00372

AC:

ExAC

AF:

0.00290

AC:

352

EpiCase

AF:

0.00349

EpiControl

AF:

0.00284

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:10

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:6

Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital	Jul 31, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Jul 01, 2020	This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -

Colorectal cancer, hereditary nonpolyposis, type 7

Benign:3

Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 27, 2017	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Benign, criteria provided, single submitter	clinical testing	KCCC/NGS Laboratory, Kuwait Cancer Control Center	Jul 07, 2023	- -

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Oct 01, 2022

MLH3: BS1, BS2 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.32

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.086

T;.;T

Eigen

Benign

-0.56

Eigen_PC

Benign

-0.36

FATHMM_MKL

Benign

0.68

LIST_S2

Benign

0.70

T;T;.

MetaRNN

Benign

0.0053

T;T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.6

L;L;L

MutationTaster

Benign

1.0

D;N;N;N;N;N

PrimateAI

Benign

0.36

PROVEAN

Benign

-0.41

N;.;N

REVEL

Benign

0.036

Sift

Benign

0.46

T;.;T

Sift4G

Benign

0.42

T;T;T

Polyphen

0.060

B;B;B

Vest4

0.099

MutPred

0.34

Gain of catalytic residue at L1108 (P = 0.0045);Gain of catalytic residue at L1108 (P = 0.0045);Gain of catalytic residue at L1108 (P = 0.0045);

MVP

0.79

MPC

0.12

ClinPred

0.0092

GERP RS

1.6

Varity_R

0.022

gMVP

0.19

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over